MAX3227EEAE+T

Overview

The MAX3227EEAE+T is a single-driver, single-receiver RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.0V to +5.5V supply and supports full-duplex communication at data rates up to 1Mbps. The device features AutoShutdown Plus technology, reducing supply current to 1µA when idle. It includes an internal dual charge pump requiring four 0.1µF capacitors for operation. Key electrical parameters include a propagation delay of 0.15µs, ±5V transmitter output swing, and 15kV ESD protection. It is housed in a 16-pin SSOP package and rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption by entering low-power shutdown mode during periods of inactivity or cable disconnection.
• Integrated dual charge pump generates required RS-232 voltage levels from a single low-voltage supply using minimal external components.
• MegaBaud capability ensures reliable high-speed data transmission up to 1Mbps for demanding applications.
• Logic-level READY output indicates when the internal charge pumps are regulating and the device is prepared for transmission.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and handheld equipment
• Battery-powered peripherals and printers

Procurement Notes

Verify the specific suffix 'T' corresponds to tape-and-reel packaging rather than tube packaging when sourcing this component. Confirm that the ordering information matches the exact temperature grade and package style required for the design. Cross-reference the manufacturer's part number with distributor listings to ensure authenticity and correct revision status before finalizing procurement orders.

Selection Notes

Select this component for designs requiring ultra-low standby power without BIOS modifications. Ensure the application utilizes a single +3.0V to +5.5V supply rail compatible with the internal charge pump requirements. Verify that the system can tolerate the typical 100µs wake-up time associated with exiting AutoShutdown Plus mode before initiating communication.

Part Context

This device belongs to the MAX3224–MAX3227 family of RS-232 transceivers designed for portable electronics. It shares core architectural features with siblings like the MAX3224EAE+, differing primarily in guaranteed data rate specifications and specific package availability within the broader product line.

Replacement Considerations

Direct functional substitutes within the same series include the MAX3224EAE+ and MAX3227EAE+. When replacing, verify that the alternative part number maintains compatibility with the existing 16-pin SSOP footprint and meets the specific data rate requirements of the target application.